1 The average monthly Social Security benefit paid to retired workers in 2015 is $1,335.97, or $16,031.64 a year. 2  The average monthly Social Security benefit paid to widows & widowers is $1,282.25, or $15,387.00 per year.
Like all hadrons, neutrons are made of quarks. A neutron is made of two down quarks and one up quark. One up quark has a charge of +2/3, and the two down quarks each have a charge of -1/3. The fact that these charges cancel out is why neutrons have a neutral (0) charge. Quarks are held together by gluons.
The next thing to be considered is effective nuclear charge. Generally speaking, effective nuclear charge is the charge felt by the valence electrons after you have taken into account the number of shielding electrons that surround the nucleus.